it's always good to check your environment to see what the delta t is. and the delta t could stand for so many things. true? yeah. hey, here's an easy question to answer, gang. no, no. here's an easy question not so easy to answer. little kid says to you, "so you live in hawaii. really nice, nice and warm all the time." "yup, nice and warm all the time, man." "i got some friends live up in northern alaska. it's cold all the time." "well, that's the way alaska is, man." [laughter] "how come it's so cold up there and so warm in hawaii?" then you say, "well, there's no reason for that. "hawaii is tropical and alaska is not. that's it." the kid says, "no, back in the question, why?" and you say... why is it so warm here and so cold up near the poles? is there a reason for such a thing? check the neighbor. well, that's easy enough. hawaii is closer to the sun. alaska is farther away. is it true? is hawaii closer to the sun than alaska? you guys know that the closer and closer you get to the sun, the hotter it is? you know that? you know you get within a milli